Preparation: Wash and separate the cups and stalks of the mushrooms. Add the mushrooms to a pan with 10 tbs of oil. Cover and fry on a low heat for 20 minutes.

While the mushrooms are frying, remove the skin from the potatoes and cut into small pieces. Add the potatoes to the pan, together with 70 grams of butter. Stir and cook, uncovered, on a medium heat until the potatoes are fried. Stir frequently.

Chop the white onions and add to the pan.

Stir and continue to cook for a further 5 minutes.

Chop the green onions and add to the pan. Stir.

Crush the walnuts and garlic together and add to the pan, together with 1 tsp of black pepper. Stir thoroughly and remove from the heat.